Altitude 2.0 Offroad Carbon Fiber Helmet

SKU: F01011900-110-003

Altitude 2.0 Offroad Carbon Fiber Helmet

Name: Altitude 2.0 Offroad Carbon Fiber Helmet
Brand: 509
SKU: F01011900-110-003
Price: 399.95 USD
Availability: InStock

$399.95 USD

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Destroy all forms of dirt with the next-generation comfort and performance of the bestselling 509 Altitude 2.0 Offroad Carbon Fiber Helmet. Hand lay-up carbon fiber composite construction makes it lighter, stronger, and sleeker than anything before it. A larger chinbar intake plus upper exhaust vents keep you cool no matter how heated the session gets. Top of the line in every way, it includes the Fidlock® magnetic strap buckle for easy one-handed operation, plus GoPro® mounting capability.

Key Features

Hand Lay-up Carbon Fiber 3K Shell – Ultimate protection in a lightweight option
Upper vents with on/off shutter closure for airflow control
Nine intake vents and four exhaust vents for optimal airflow
Fidlock® The Fidlock System is a cutting-edge magnetic chinstrap buckle used in motorsport helmets ensuring quick, secure, closures with one hand and is DOT and ECE compliant.
chinstrap strap closure for easy in and out
Moisture wicking removable Liner & Cheek pads for custom fit adjustments and easy to wash → Shop Cheek Pads for Altitude 2.0 Helmets
Replaceable polycarbonate visor
Universal camera mount capable
WARNING for California Residents

Specs

Helmet Certification: DOT & ECE 22.05
Starting Weight: 1100 grams
Best Head Shape: Intermediate oval fit
Size Range: XS - 4X
Shell Breaks:
Small Shell - XS, SM
Medium Shell - MD, LG, XL
2X Shell - 2X, 3X, 4X
Included items: 509 helmet drawstring bag, 509 helmet bag, Chinbar vent plugs, chin curtain, 509 Sticker

Altitude Offroad Helmet Comparison

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You're going to LOVE the fit. Try it on and experience our perfect fit. If you don't love it, send it back in new and unused condition within 30 days for an exchange or full refund*. Risk free.

Not sure about your size? Try on at your local dealer!

*Street Helmets are a tighter fit due to cheekpad compression, however, they do pack out over time/use.

How to Measure

When measuring your head, use a cloth tape. Start it just above your eyebrows and circle it around the thickest point in the rear of your head and then reference the size guide below.

Scroll to the right to see more sizes

Size	US Hat Size	Inches	Centimeters
X-Small	6 5/8 - 6 3/4	20 7/8 - 21 1/8	53 - 54
Small	6 7/8 - 7	21 5/8 - 21 7/8	55 - 56
Medium	7 1/8 - 7 1/4	22 1/2 - 22 5/8	57 - 58
Large	7 3/8 - 7 1/2	23 1/4 - 23 1/2	59 - 60
X-Large	7 5/8 - 7 3/4	24 - 24 1/4	61 - 62
2X-Large	8	24 3/4 - 25	63 - 64
3X-Large	8 3/4	25 1/4 - 25 3/4	64 - 65
4X-Large	9	26 - 26 1/4	66 - 67
Youth Small	6	18 1/8 - 18 7/8	47 - 48
Youth Medium	6 1/8 - 6 1/4	19 1/4 - 19 5/8	49 - 50
Youth Large	6 3/8 - 6 1/2	20 - 20 1/2	51 - 52

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

The Fidlock System is a cutting-edge magnetic buckle used in helmets for different biking activities, including snowmobiling, dirt biking, and street biking. Unlike the traditional double D ring closure, the Fidlock System employs a magnetic mechanism, allowing riders to effortlessly secure their helmets with one hand, even while wearing gloves.

Quick and Secure Closure:

Whether tearing through snowy trails on a snowmobile, maneuvering challenging dirt bike tracks, or cruising on city streets, the Fidlock System's magnetic buckle allows riders to quickly and securely close their helmets, even while wearing gloves.

Time-Saving Convenience:

The Fidlock System's effortless one-handed closure and release save valuable time, ensuring bikers can hit the road or trail promptly and enjoy more riding time.

Enhanced Safety:

DOT and ECE compliance guarantee that the Fidlock System-equipped helmets provide top-notch safety, protecting bikers from potential impacts and hazards unique to each activity.

Reliable Performance:

The replaceable male magnetic end ensures the Fidlock System maintains its integrity and dependability over time, offering consistent performance during numerous biking adventures.

Overall rating: 4.962264 / 5 from 53 reviews.

AI Generated Review Summary

The Altitude 2.0 Offroad Carbon Fiber Helmet is highly regarded for its lightweight design, excellent fit, and sleek appearance. Customers praise its durability and comfort, making it a top choice for offroad adventures.

Summary topics

Lightness: 21%
Aesthetic Appeal: 13%
Comfort Fit: 23%

Review topics: ["fit","weight","quality","helmet","looks","feel","light","goggles","altitude 2.0","system","air flow"].

Review highlights

"Its light fits perfectly and looks awesome!" — William C.
"Excellent helmet, very comfortable and super light." — Richard
"Super light weight, very comfortable, breathable, and looks so nice!" — Slavic D.

Reviews

Fits all goggles really well

"Amazingly comfortable and lightweight. My favorite thing about the helmet is the wide field of view in the front. It allows for any goggle to fit comfortably. With newer goggles having larger frames, some helmets push the goggles down on your nose. This helmet perfectly accommodates all goggles comfortably. The fit ran a little bit larger than some other brands for me. I have zero complaints."

— Cameron H. (5/5)

Excellent!!!

"Super light. Excellent quality. Unbeatable price. Pack full of features."

— Jeremy G. (5/5)

"Excellent helmet, very comfortable and super light. I would definitely recommend against the really expensive carbon helmets."

— Richard (5/5)

Great helmet! It is extremely

"Great helmet! It is extremely light weight and incredibly durable. I do a lot of downhill riding and it's definitely a confidence booster to know I don't have to worry about bouncing my head off the ground. Also the locking mechanism for the chinstrap is an absolute dream. It cuts down on time messing with a traditional d ring."

— Jestin K. (5/5)

Lightest helmet!!

"This is half the weight of my old helmet and it has an easy to use buckle. Highly recommend."

— Tara S. (5/5)

Great value.

"The lightness and airflow of this helmet is amazing for the price. Fit is similar to other brand helmets."

— mike f. (5/5)

Almost perfect

"I do lots of trail riding on weekends and I gotta say I love this helmet. Only thing that could make it better is a integrated Cardo"

— Braden H. (5/5)

Epic lid !!

"Super light weight, I have struggled with neck pain with other helmets. This one fits great and you can barely feel its weight."

— Kolten M. (5/5)

Rockstar status

"This helmet is lightweight, vents well and has awesome field of vision. Would recommend to anyone looking for a high quality do it all helmet!!!"

— Hayden K. (5/5)

Altitude 2. 0 off-road carbon fiber helmet

"Very comfortable fit and extremely breathable"

— Danny R. (5/5)

Q&A

What's the difference between this helmet and the snow version of the Altitude 2.0 Carbon Fiber helmet? I mean, is it possible to convert this helmet to a snow version and if so with which parts.: Hey Carlo, apologies for the delay here! While our helmets are purpose-built for their designated riding category, the main difference between the offroad vs snow version of this helmet comes down to the breathbox and hi-flow venting. In order to use this helmet for snow, you would need to order a [breathbox](https://ride509.com/products/pro-series-breath-box-for-altitude-2-0-helmet) and a [vent stopper kit](https://ride509.com/products/vent-stopper-kit-for-altitude-2-0-helmet) to close off the high-flow vents.
How much does this helmet weigh? On amazon they say it weighs only 1 pound.: Hey Mie, the starting weight for this helmet is 1,070 grams which would roughly be around 2.36 pounds.
In-helmet comm readiness? Does the helmet have the recesses to mount the communicator speakers (e.g. Sena)?: Hey Michael, yes that is correct - there are recesses inside the helmet that allow for speakers to be inserted.

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